ORINDA -- About 30 to 40 homes were briefly threatened by a three-alarm brush fire in the area of Orinda Oaks Park on Monday afternoon, but crews had the blaze under control by about 3 p.m.

There were no reports of injuries or structural damage caused by the blaze, which had burned about eight to 10 acres and was reported 100 percent contained shortly after 3 p.m., according to Moraga-Orinda Fire Operations Chief Darrell Lee. Students were being evacuated by bus from nearby Orinda Intermediate School, according to Principal Michael Randall.

The blaze began at approximately 1:30 p.m. near 80 Ivy Drive, according to Contra Costa Fire Marshal Robert Marshall. The fire was upgraded from two alarms to three at around 1:50 p.m., Marshall said.